Abstract: An orthotic shoe insert adapted to effectively control foot motion during gait to reduce trauma to various anatomical structures of the lower extremity and to increase gait efficiency. The orthosis comprises a unitary, curved wedge having a hook-like shape when viewed from above and includes a heel portion adapted to engage the sides of the heel, a middle portion adapted to engage the plantar side of the medial portion of the longitudinal arch, and a front portion adapted to engage the plantar side of the user's forefoot to a level just distal to the first and second metatarsal heads. The orthosis adjusts itself to different arch heights, and therefore may be fabricated without requiring custom fitting.